Especially since I was a member of a super-secret WALRUS team...
One of the most desired *I was there* patches among Special Forces folks in Vietnam was the US Forest Service Junior Ranger patch handed out to SF folks who helped the USFS test some experimental equipment [including mosquito repellent formulations] under harsher than routine conditions.
The current patches don't get it- they just depict a Ranger's hat. The old ones had Smoky the Bear.
o